\(\left(x-2012\right)^2+\left(x+2013\right)^2\)
\(=x^2-2.2012+2012^2+x^2+2.2013+2013^2\)
\(=2x^2+2x+2012^2+2013^2\)
\(=2\left(x^2+x+\frac{1}{4}\right)+8100312,5\)
\(=2\left(x+\frac{1}{2}\right)^2+8100312,5\)
Bí
alibaba
kudo shinichi sai oy
bài đúng nè:
https://olm.vn/hoi-dap/detail/12167075509.html